FIELD: medicine.
SUBSTANCE: invention refers to medicine, namely uronephrology, and may be used in prenatal differential diagnosis of disturbed urine outflow at lower urinary tract in a foetus. Ultrasonic technique is used to measure a maximum bladder volume and an amount of residual urine after foetus's self-induced urination. The normal maximum bladder volume on the 21-24 week of gestation is 1.11-1.99 ml, on the 30-34 week of gestation - 15.2-18.8 ml, on the 37-39 week of gestation - 23.7-27.9 ml. If observing the normal maximum bladder capacity relevant to the gestation period, and the absence of residual urine, constrictive ureterohydronephrosis with underlying congenital distal ureter stricture above the bladder is diagnosed. An early postnatal surgical management is prescribed. If observing the normal maximum bladder capacity relevant to the gestation period, and the presence of residual urine 20-30% of the normal maximum bladder capacity, reflux ureterohydronephrosis with underlying bladder neurogenic dysfunctions is diagnosed, and a conservative therapy is prescribed. If observing no therapeutic effect over the period of 8-9 years, a surgical management is performed. If the normal maximum bladder capacity relevant to the gestation period is increased in 1.5-2 times and the presence of residual urine 70-80% of the its maximum increased capacity, two-sided megaloureter is diagnosed, and a conservative therapy is prescribed.
EFFECT: method enables prenatal verification of the abnormal development of the urinary system and delivery of preclinical urological care.
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